persiana para las ventana

'; return a; } CARDS.forEach(function(d){ track.appendChild(buildCard(d)); }); CARDS.forEach(function(d){ track.appendChild(buildCard(d)); }); /* clon 1 */ CARDS.forEach(function(d){ track.appendChild(buildCard(d)); }); /* clon 2 */ /* ── Dots (solo para los reales) ── */ for (var i = 0; i < N; i++) { var d = document.createElement('button'); d.className = 'nv-dot' + (i===0?' on':''); d.setAttribute('aria-label','Ir a '+(i+1)); d.dataset.i = i; d.addEventListener('click', function(){ jumpTo(parseInt(this.dataset.i)); resetAuto(); }); dotsEl.appendChild(d); } /* ── Helpers ── */ function cardW() { var c = track.querySelector('.nv-card'); return c ? c.offsetWidth : 200; } function gapW() { var w = window.innerWidth; return w<=480?9:w<=768?12:16; } function stepPx() { return cardW() + gapW(); } function offsetFor(idx) { return idx * stepPx(); } function setTransform(px, animate) { track.style.transition = animate ? 'transform .5s cubic-bezier(0.25,0.46,0.45,0.94)' : 'none'; track.style.transform = 'translateX(-' + px + 'px)'; } function updateVisual() { var ds = dotsEl.querySelectorAll('.nv-dot'); ds.forEach(function(d,i){ d.classList.toggle('on', i===current); }); var all = track.querySelectorAll('.nv-card'); all.forEach(function(c,i){ c.classList.toggle('active-c', i===current); }); } /* ── Ir a índice directo (desde dots) ── */ function jumpTo(idx) { if (busy) return; current = ((idx%N)+N)%N; setTransform(offsetFor(current), true); updateVisual(); } /* ── Avanzar 1 paso con loop infinito ── */ function advance() { if (busy) return; var next = current + 1; if (next < N) { /* Normal */ current = next; setTransform(offsetFor(current), true); updateVisual(); } else { /* Último real → animar hacia clon[0] (posición N) y volver sin animación */ busy = true; setTransform(offsetFor(N), true); setTimeout(function(){ current = 0; setTransform(offsetFor(0), false); updateVisual(); busy = false; }, 520); } } /* ── Retroceder 1 paso ── */ function retreat() { if (busy) return; if (current > 0) { current--; setTransform(offsetFor(current), true); updateVisual(); } else { /* Primer real → saltar a clon del final y volver */ busy = true; setTransform(offsetFor(N - 1 + N), true); /* último clon */ setTimeout(function(){ current = N - 1; setTransform(offsetFor(current), false); updateVisual(); busy = false; }, 520); } } /* ── Autoplay ── */ function startAuto() { autoTimer = setInterval(advance, AUTO_MS); } function resetAuto() { clearInterval(autoTimer); startAuto(); } /* ── Drag mouse ── */ var dragX = 0, dragging = false; window.nvDragStart = function(e) { if (busy) return; dragX = e.clientX; dragging = true; document.addEventListener('mousemove', nvDragMove); document.addEventListener('mouseup', nvDragEnd); }; function nvDragMove(e) { if (!dragging) return; if (Math.abs(e.clientX - dragX) > 5) track.style.pointerEvents = 'none'; } function nvDragEnd(e) { if (!dragging) return; dragging = false; track.style.pointerEvents = ''; var diff = e.clientX - dragX; if (diff < -50) advance(); else if (diff > 50) retreat(); document.removeEventListener('mousemove', nvDragMove); document.removeEventListener('mouseup', nvDragEnd); resetAuto(); } /* ── Touch móvil ── */ var tX = 0; window.nvTouchStart = function(e){ tX = e.touches[0].clientX; }; window.nvTouchMove = function(e){ e.preventDefault(); }; window.nvTouchEnd = function(e){ var diff = e.changedTouches[0].clientX - tX; if (diff < -45) advance(); else if (diff > 45) retreat(); resetAuto(); }; /* ── Resize ── */ window.addEventListener('resize', function(){ setTransform(offsetFor(current), false); }); /* ── Init ── */ setTransform(0, false); updateVisual(); startAuto(); })();